화학공학소재연구정보센터
Thin Solid Films, Vol.520, No.15, 4929-4933, 2012
Enhanced photocatalytic activity of TiO2 by polydimethylsiloxane deposition and subsequent thermal treatment at 800 degrees C
A thin film of polydimethylsiloxane (PDMS) was coated on TiO2 nanoparticles (P-25, Dagussa), and surface structures of the thin films were analyzed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Furthermore, photocatalytic activity of PDMS-coated TiO2 samples with various annealing temperatures was determined using UV irradiation. We show that the 800 degrees C-annealed sample of PDMS-coated TiO2 showed a two-fold higher photocatalytic activity with respect to the bare TiO2. The enhanced photocatalytic activity was attributed to the greater hydrophilicity of the annealed PDMS coating. (c) 2012 Elsevier B.V. All rights reserved.